
Automatic merge from submit-queue (batch tested with PRs 37092, 37850) Turns on dns horizontal scaling tests for GKE Seems like the dns-autoscaler is already enabled in [this recent gke build](https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/logs/ci-kubernetes-e2e-gci-gke/769/). Turning on the corresponding e2e tests to increase test coverage. Probably better to wait for this fix #37261 to go in first. @bowei @bprashanth cc @maisem @roberthbailey